I have a Sony PCG-7D2L laptop that will no longer power up. When you hit the power button, absolutely nothing lights up, spins, or makes any noise whatsoever. I have verified that it is getting 19.5 volts coming in to the board. I have also taken it apart and tested the voltage coming into the motherboard and it is 19.5v as well.
Note that the Sony laptop doesn't have the usual jack soldered directly onto the motherboard, but rather, it has a little cable extender from the jack that travels to the middle of the motherboard.
I have taken out the battery, memory, hard drive, and DVD to rule out any interference, although that shouldn't have had anything to do with it. It still doesn't start.
Is there anything else it could be other than the motherboard?